Related Mcqs:

1. In the above question, what is the power in sidebands ?

   A. 8 kW
   B. 6 kW
   C. 06 kW
   D. 9 kW

2. At 100% modulation, the power in each sideband is _____________ of that of carrier?

   A. 50%
   B. 40%
   C. 60%
   D. 25%

3. In an AM wave, the majority of the power is in _____________?

   A. Lower sideband
   B. Upper sideband
   C. Carrier
   D. None of the above

4. In an AM wave useful power is carrier by ______________?

   A. Carrier
   B. Sidebands
   C. Both sidebands and carrier
   D. None of the above

5. If level of modulation is increased ______________ power is increased?

   A. Carrier
   B. Sideband
   C. Carrier as well as sideband
   D. None of the above

6. A 50 kW carrier is to be amplitude modulated to a level of 85%. What is the carrier power after modulation ?

   A. 50 kW
   B. 5 kW
   C. 8 kW
   D. 25 kW

7. In TV transmission, picture signal is ______________ modulated?

   A. Frequency
   B. Phase
   C. Amplitude
   D. None of the above

8. The function of ferrite antenna is to_________________?

   A. Reduce stray capacitance
   B. Stabilise d.c. bias
   C. Increase the Q of tuned circuit
   D. Reduce noise

9. If a radio receiver amplifies all the signal frequencies equally well, it is said to have high ________________?

   A. Sensitivity
   B. Selectivity
   C. Distortion
   D. Fidelity

10. In a TRF radio receiver, the RF and detection stages are tuned to______________?

    A. Radio frequency
    B. IF
    C. Audio frequency
    D. None of the above